“I’ve been away (filming Our Girl) for so long and I haven’t had time to work out, and I literally landed two days ago and now I’m kicking myself and thinking, ‘Why didn’t I just eat healthily while I was away?’

“But you know what, I think I needed to put on a bit of weight. I was a bit bony.”

The 30-year-old actress, who appears on the fitness magazine’s front cover in a crop top and pants, added that she still gets nervous when wearing “teeny-tiny clothes”.

She said: “You can hide behind your character when you’re acting – you’re not being yourself.

“That’s what keeps me sane. But you know what, I know I’m really lucky. I have to pinch myself all the time.”

She told the magazine that she and former The Only Way Is Essex star Wright have “not planned anything” in terms of having a family, adding that “realistically nothing can happen right now because I’m too busy”.

“But I’ve always been broody,” she said, revealing that she wants “four” children and that it happens “hopefully in the near future”.